All-time weather records — Monticello, UT
Climate change signal in Monticello
of Monticello's all-time daily heat records were set in the last decade (306 of 366 records since 2015).
of all-time daily cold records were set in the last decade (263 of 366 records since 2015).
If records were spread evenly across the station's history, you'd expect roughly 5% per decade. Decade-by-decade, here's where each record-breaking day was set:
| Decade | Heat records set | # | Cold records set | # |
|---|---|---|---|---|
| 2010s | 181 | 231 | ||
| 2020s | 185 | 135 |
Records are the all-time daily extremes that are still standing — each daily record can only be held by one year. The station's earliest hot record was set in 2011, the latest in 2026. Period of observation: 2011-2026.
Records by month
| Month | Hottest day | Coldest day | Wettest day |
|---|---|---|---|
| January | 57.0°F — Jan 27, 2015 | -4.0°F — Jan 12, 2013 | 1.85 in — Jan 2, 2023 |
| February | 60.1°F — Feb 25, 2025 | -5.1°F — Feb 20, 2019 | 0.89 in — Feb 23, 2015 |
| March | 79.0°F — Mar 22, 2026 | 6.1°F — Mar 25, 2023 | 1.19 in — Mar 22, 2023 |
| April | 79.0°F — Apr 23, 2012 | 10.0°F — Apr 5, 2023 | 0.78 in — Apr 22, 2020 |
| May | 84.0°F — May 10, 2018 | 23.0°F — May 9, 2024 | 0.72 in — May 23, 2019 |
| June | 95.0°F — Jun 16, 2021 | 30.9°F — Jun 9, 2020 | 1.05 in — Jun 21, 2024 |
| July | 97.0°F — Jul 10, 2021 | 39.9°F — Jul 1, 2020 | 1.06 in — Jul 2, 2022 |
| August | 93.9°F — Aug 2, 2024 | 39.0°F — Aug 20, 2021 | 1.93 in — Aug 6, 2016 |
| September | 93.0°F — Sep 7, 2022 | 28.9°F — Sep 9, 2020 | 1.11 in — Sep 1, 2015 |
| October | 82.0°F — Oct 1, 2024 | 3.9°F — Oct 30, 2019 | 1.39 in — Oct 14, 2025 |
| November | 69.1°F — Nov 3, 2020 | 6.1°F — Nov 30, 2015 | 1.70 in — Nov 23, 2013 |
| December | 61.0°F — Dec 2, 2021 | -6.0°F — Dec 9, 2013 | 1.02 in — Dec 29, 2012 |
Click a month to see every daily record for that month in Monticello.